Has anyone here encountered any trouble using these epoxy primers with air dry top coats? I used a High build primer and didn't allow enough cure time between primer and top coat. The PPG tech sheet specs were followed to a "T", but now I have to stip off the topcoat, sand and repaint. The store and PPG regional rep. basically blamed technique and temperature as the culprit. The paint has been dry for a month but it's not even close to being cured because the epoxy is still giving off fumes. Xylene wipes it off in seconds. I even tried running parts through a bake oven, but the topcoat lost its adhesion. Does anyone wonder if these reps just come around and make excuses to wear you out so you'll just shut up & put up? Live and learn I guess.